CN106596904A - Distributed test system and test method for concrete damage detection - Google Patents
Distributed test system and test method for concrete damage detection Download PDFInfo
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- CN106596904A CN106596904A CN201611103616.7A CN201611103616A CN106596904A CN 106596904 A CN106596904 A CN 106596904A CN 201611103616 A CN201611103616 A CN 201611103616A CN 106596904 A CN106596904 A CN 106596904A
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- optical cable
- straining
- concrete
- sensing optical
- monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; ceramics; glass; bricks
- G01N33/383—Concrete, cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention discloses a distributed test system and test method for concrete damage detection. A complete concrete damage test technology system is obtained with the adoption of a distributed fiber optic test technology and by improvement of a test method, a device system and a data processing technology, and better technical service can be provided for the engineering damage detection field.
Description
Technical field
The present invention relates to concrete NDT system regions, specifically a kind of concrete damage inspection based on straining and sensing optical cable
Survey distributed test system and method for testing.
Background technology
Concrete is the purposes most maximum a kind of construction material of wide, consumption in civil engineering, and the concrete of different labels can
Carry corresponding external force effect.However, because its own is a kind of porous material heterogeneous, in carbon dioxide, water, chlorion
Under corrosion function Deng medium, inevitable impact by foeign element and corrode the damage and failure of recurring structure.Therefore,
Concrete damage detect for national economy development and people life property safety there is indispensable effect, its be also work as
Modern international community main bugbear urgently to be resolved hurrily.
At present, for concrete damage detection can be divided into Inner Defect Testing and Surface testing, wherein, for internal flaw
The technical method of detection mainly has ultrasound examination, detections of radar, ray detection, turbine detection, sound emission etc..Ray detection can
To penetrate object to be detected and physics chemical action occurs with it, the degree of injury of objective body is judged by the power of ray, but
It is that its relatively costly is difficult to promote the use of；Ultrasonic wave and detections of radar are required to that target surface is more smooth can be with detecting instrument
Fully coupling, secondly ultrasonic wave be only applicable to situation known to disease region, and can only longitudinal probing lateral resolution it is relatively low,
Detections of radar requirement disease target area dielectric constant has bigger difference with surrounding medium；Turbine detection then requires higher operation ring
Border, it is desirable to which its influence factor is less.It is usual for Surface testing to complete using manually, but it is for example overhead for special engineering
Bridge and skyscraper, testing staff is difficult to reach the purpose of effective detection, and the later stage is detected using manned aircraft, but exists
Relatively costly problem.
The content of the invention
It is an object of the invention to provide a kind of concrete damage based on straining and sensing optical cable detects distributed test system
And method of testing, to solve problem present in prior art concrete component damage check.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of concrete damage detects distributed test system, it is characterised in that：Including data collecting system, data processing
With analysis system, monitoring and warning system, the data collecting system is by the internal monitoring strain sense for being embedded in inside concrete
Light-metering cable is constituted with the surface monitoring for being arranged on concrete surface with straining and sensing optical cable, wherein internal monitoring straining and sensing light
Cable is Metal Substrate strand straining and sensing optical cable, and surface monitoring straining and sensing optical cable is Metal Substrate banding straining and sensing optical cable, institute
State internal monitoring straining and sensing optical cable, surface monitoring straining and sensing optical cable respectively by fiber demodulator and data processing and
Analysis system connects, and data process＆analysis system is connected with monitoring and warning system.
A kind of described concrete damage detection distributed test system, it is characterised in that：Internal monitoring straining and sensing
Optical cable, surface monitoring straining and sensing optical cable are each configured with temperature-compensating optical cable, wherein internal monitoring straining and sensing optical cable
The temperature-compensating optical cable of configuration is metal seamless tube sheath temperature optical cable for sensing, and metal seamless tube sheath temperature optical cable for sensing is with interior
Portion's monitoring is used inside straining and sensing optical cable Transducers Embedded in Concrete, and the temperature-compensating optical cable of surface monitoring straining and sensing optical cable configuration is
Metal Substrate banding temperature sensing optical cable, Metal Substrate banding temperature sensing optical cable is located at coagulation with surface monitoring straining and sensing optical cable
Native surface, metal seamless tube sheath temperature optical cable for sensing, Metal Substrate banding temperature sensing optical cable respectively by fiber demodulator with
Data process＆analysis system connects.
A kind of described concrete damage detection distributed test system, it is characterised in that：Also include being arranged on concrete
Internal regular reinforcement component, internal monitoring straining and sensing optical cable is fixed on reinforcement component surface.
A kind of described concrete damage detection distributed test system, it is characterised in that：Internal monitoring straining and sensing
Optical cable lays form in inside concrete in global mesh formula, and surface monitoring straining and sensing optical cable is in level in concrete surface
Laying form.
A kind of concrete damage detects distributed test method, it is characterised in that：First according to the length of straining and sensing optical cable
Degree, concrete measured object and external condition coverage, set range, sample frequency, pulsewidth, the spectral range of monitoring instrument；
After straining and sensing optical cable installation, the collection of background data, including strain stress are carried out0With temperature value t0, As time goes on,
Measuring strain optical cable for sensing each point concrete deformation amount ε along the linei(i=1,2 ... ..., n), and the data that the later stage is monitored every time
Subtracting background value is used as certain concrete deformation value Δ ε=εi-ε0, because straining and sensing optical cable is to axial strain and temperature dual
Sensitivity, can not consider in extraneous temperature change less than 5 DEG C, but Large Infrastructure Projects are at and air directly contact substantially
Environment in, temperature change throughout the year is certain to the seizure on straining certain impact, can be strained according to formula (1)
Accurate calculation：
In formula (1), υB(ε) be strain for ε when Brillouin's frequency drift value, υB(0) be strain for 0 when Brillouin
The drift value of frequency,For Proportion of strain value coefficient,For Temperature affection factor, T-T0For temperature variation, ε is light
Fine dependent variable；
Strain is caught sensitivity characteristic using straining and sensing optical cable, when straining and sensing optical cable couples completely association with concrete
During modulation shape, its strain size for occurring is the deflection of concrete component,
Based on the linear relationship between Brillouin shift and sensor fibre strain, it is embedded in by monitoring instrument real-time monitoring
The deformation of straining and sensing optical cable is passed in concrete, sensor fibre circuit stress point is calculated by formula (2) incident to instrument
End apart from Z：
Z=cT/2n (2),
In formula (2)：C is the light velocity in vacuum, and T/2 is to send the Brillouin that pulsed light is returned to reception optical fiber stress point
The half the time interval of scattered light, n is the refraction coefficient of optical fiber；
The position for answering variable quantity and each point of straining and sensing optical cable each point along the line is can determine that according to above-mentioned formula (1), (2), when
When concrete region point deforms, by the straining and sensing optical cable laid in component, you can residing for targeted disruption position
Scope, is repaired in time.
The present invention is surveyed for problem present in the detection of existing concrete component damage based on distributed strain optical cable for sensing
Examination technology has the advantages that real-time, high precision, survival rate height, long range propagation, senses and be transmitted in one, invention design one
Plant simple, the safe and reliable concrete damage detection distributed test system of easily manipulation, method and method of testing.
Compared with the prior art, beneficial effects of the present invention are embodied in：
1st, concrete damage monitoring is carried out using distributed strain optical cable for sensing, it has distributed, high precision, installs letter
The advantages of single, relatively low cost and electromagnetism interference, the problem of missing inspection is prevented effectively from, and optical cable has the function of sensing transmission concurrently,
And survival rate is higher can long term monitoring.
2nd, distributed strain optical cable for sensing can occur compatible deformation with concrete good coupling, by straining and sensing optical cable edge
Line gained strain value can obtain concrete variable quantity, determine the degree of impairment of concrete component, realize effective monitoring of health monitoring.
3rd, the monitoring system can carry out remote job and implement online monitoring and warning, and straining and sensing optical cable is laid after finishing and reached
To the effect put things right once and for all, the danger coefficient of high-altitude personnel's operation is substantially reduced, next sensing optic cable itself is to concrete without strong
Health affects.
Description of the drawings
Fig. 1 is concrete damage monitoring system figure.
Fig. 2 is concrete damage analogue experiment installation schematic diagram, wherein：
Fig. 2 a are device overall schematic, and Fig. 2 b are device top view.
Fig. 3 is simulated test Interpretation On The Results figure, wherein：
Fig. 3 a are G1/G3 optical cable stress strain diagrams, and Fig. 3 b are G2 optical cable stress strain diagrams.
Specific embodiment
Distributed test system of the present invention includes data acquisition, data process＆analysis, three Major Systems of monitoring and warning,
As shown in Figure 1.Wherein data acquisition mainly carries out along the line the collection of distributed strain data to optical cable, and data process＆analysis are
The link of most critical, monitoring and warning is to utilize data results, differentiates that abnormal conditions are shown in real time monitoring personnel.Specifically
Step is as follows：
1st, the type selecting of straining and sensing optical cable
For the health monitoring of concrete component is divided into internal and two kinds of surface, the monitoring of diverse location will be using different shaped
Number optical cable.Metal Substrate strand straining and sensing optical cable is chosen in inside concrete monitoring, and Metal Substrate strand straining and sensing optical cable is biography
Photosensitive fibre is protected inside it by Metal Substrate strand, and the helicitic texture on its surface causes itself have good coupling with concrete
Property, can be with concrete cooperative transformation；Surface monitoring then chooses Metal Substrate banding straining and sensing optical cable, Metal Substrate banding straining and sensing
Optical cable is that sensor fibre is protected inside it by Metal Substrate banding, and it adopts high-quality porous hollow out metal tape, can gluing or welding
Measured object surface is fixed on, it is consistent with concrete deformation of combining closely.Simultaneously, it is contemplated that infrastructure is in exposed state,
And fiber demodulator is sensitive for strain and temperature dual, while straining and sensing optical cable is laid temperature-compensating light is implemented
Cable, corresponds to respectively metal seamless tube sheath temperature optical cable for sensing and Metal Substrate banding temperature sensing optical cable.
2nd, the laying of straining and sensing optical cable
2.1 inside concrete damage monitoring optical cables are laid
In order to plus reinforced concrete mechanical property, in casting process can in the reinforcement component of its internal layout rules,
It can be fixed on into rebar surface, later stage Jing with nylon cable tie by reinforcing bar when internal monitoring straining and sensing optical cable is laid
Cross pouring the two and can coupling completely for concrete.For body of wall, road surface, bridge etc. can lay form using global mesh shape,
As shown in figure 1, can so be prevented effectively from missing inspection.
2.2 concrete surface health monitoring optical cables are laid
For the surface monitoring straining and sensing optical cable of concrete health, Metal Substrate banding straining and sensing light is generally adopted
Cable, using binding agent so that straining and sensing optical cable and concrete surface good coupling, period is in order to ensure surface monitoring strain
Optical cable for sensing is linearly laid, and is corrected using infrared laser level meter, as shown in Figure 1.
Two kinds of distribution methods of appeal reserve the straining and sensing optical cable of certain length, and sensing optic cable is transferred at data
Reason and analysis system.
3rd, concrete damage monitoring method and Data Management Analysis
Length, concrete measured object and external condition coverage first according to straining and sensing optical cable, sets monitor
The range of device, sample frequency, pulsewidth, spectral range, the monitoring instrument is fibre strain distribution detector；Straining and sensing optical cable is pacified
After the completion of dress, the collection of background data, including strain stress are carried out0With temperature value t0, As time goes on, measuring strain sensing light
Cable each point concrete deformation amount ε along the linei(i=1,2 ... ..., n), and the data subtracting background value that the later stage is monitored every time as
Certain concrete deformation value Δ ε=εi-ε0, because straining and sensing optical cable is to axial strain and temperature dual sensitivity, in ambient temperature
Change can not consider less than 5 DEG C, but Large Infrastructure Projects are in the environment with air directly contact substantially, 1 year four
The temperature change in season is certain to the seizure on straining certain impact, the accurate calculation that can be strained according to formula (1)：
In formula (1), υB(ε) be strain for ε when Brillouin's frequency drift value, υB(0) be strain for 0 when Brillouin
The drift value of frequency,For Proportion of strain value coefficient,For Temperature affection factor, T-T0For temperature variation, ε is
The dependent variable of optical fiber；
Strain is caught sensitivity characteristic using straining and sensing optical cable, when straining and sensing optical cable couples completely association with concrete
During modulation shape, its strain size for occurring is the deflection of concrete component,
Based on the linear relationship between Brillouin shift and sensor fibre strain, it is embedded in by monitoring instrument real-time monitoring
The deformation of straining and sensing optical cable is passed in concrete, sensor fibre circuit stress point is calculated by formula (2) incident to instrument
End apart from Z：
Z=cT/2n (2),
In formula (2)：C is the light velocity in vacuum, and T/2 is to send the Brillouin that pulsed light is returned to reception optical fiber stress point
The half the time interval of scattered light, n is the refraction coefficient of optical fiber；
The position for answering variable quantity and each point of straining and sensing optical cable each point along the line is can determine that according to above-mentioned formula (1), (2), when
When concrete region point deforms, by the straining and sensing optical cable laid in component, you can residing for targeted disruption position
Scope, is repaired in time.
4th, concrete exceptions area is evaluated
With reference to straining and sensing optical cable strain characteristics along the line, to detecting objective body judgement is analyzed.Distributed strain is sensed
The data of optical cable collection import data process＆analysis system through transmitter, and through Data Management Analysis relevant information will be strained
Monitoring and warning system is transferred to, exceptions area is considered as when having large change compared with background value for strain value carries out early warning, and can basis
Exceptional value difference size quantitative assessment concrete component degree of impairment.
Specific embodiment：
Model is carried：
This experiment carry model based on length × width × height=5850 × 100 × 40mm PVC wire casings, inside it
Injection C30 (cement:Sand=1:1) concrete of standard.Three optical cables are embedded in into concrete with position relationship arranged in parallel
In, it is spaced 20mm per two optical cables.A number optical cable is naked fibre, is adapted into fixed point optical cable i.e. on cable line every 200mm
One point of mark, No. two optical cables are polyurethane tight sleeve optic cable, are equally also changed to fixed point optical cable and are used, method same light
Cable, No. three optical cables are naked fibre, are left intact, and period two optical cable is laid between one, No. three cables.Model has been carried
Finish, whole device is placed on three STDZ-1 type Point Load Strength Instruments, 1# test instruments are separated by 1870mm with 2#, and 2# is alternate with 3#
, apart from head end 320mm, 3# is apart from afterbody 1860mm for 1800mm, 1#.In order to realize uniform pressurization, Point Load Strength Instrument is repacked into
Uniform load instrument, will point loading tip remove, while concrete up and down local plus sub- Gree plate so as to it is pressurized uniform,
Whole model equipment is illustrated as shown in Fig. 2 a, b.
Three optical fiber are laid altogether in concrete implantable fixed point destructive test：G1、G2、G3.Monitored according to Practical Project
Specific requirement, with reference to the characteristics of fiber-optic monitoring, region is carried out to test model and intersects data monitoring simulation, forms a set of more section
Fiber deployment scheme, completes the data system collection of STRESS VARIATION.It is embodied as follows：
G1 (naked fibre)
Installation position：In accompanying drawing 2b shown in G1；
Buried depth：20mm；
Bury length：5850mm；
Afterbody is reserved：1000mm；
Connecting line and wire jumper length：14000mm；
Laying mode：Mark a bit every 200mm；
G2 (polyurethane tight sleeve optic cable)
Installation position：Lay parallel to G1, in accompanying drawing 2b shown in G2；
Buried depth：20mm；
Bury length：5850mm；
Afterbody is reserved：1000mm；
Connecting line and wire jumper length：19000mm；
Laying mode：Mark a bit every 200mm；
G3 (naked fibre)
Installation position：Lay parallel to G1, G2, in accompanying drawing 2b shown in G3；
Buried depth：20mm；
Bury length：5850mm；
Afterbody is reserved：1000mm；
Connecting line and wire jumper length：14000mm.
Data acquisition：
Need to obtain first supporting fiber data acquisition system in this experiment to complete to strain background Value Data to model
Collection, be then pressurized to 1# successively from 3# with STDZ-1 types Point Load Strength Instrument, in each pressure process, all need measurement three
Group data, correspond to respectively two naked fibres and polyurethane tight sleeve optic cable, it is therefore intended that be compared between three, be easy to later data
Analyze and release into diagram.Specific embodiment is as shown in table 1.
Table 1 gathers embodiment
Data process＆analysis：
Need to consider impact of the environment temperature to test data in process of the test.This simulated test is using based on cloth
In deep pool scattering optical fiber sensing technology, by measure Brillouin scattering frequency displacement come test under the conditions of adopting Strain Distribution spy
Levy.And Brillouin shift has the cross sensitivity to strain and temperature change, the normal basis in real data gatherer process
Data acquisition quality carries out temperature-compensating to the strain surveyed, to realize the accurate measurement to strain data.For temperature-compensating
Conventional method be that the sensor fibre of a free state is laid under identical temperature field or same survey line the preceding paragraph freedom is chosen
State optical fiber, its not strained state impact and the sensor fibre to monitoring temperature change.In theory, from actual measurement frequency displacement
In cut the frequency displacement that temperature change causes and can be obtained by by the logarithmic strain of geodesic structure.
I.e.：
In formula, ε is the strain that optical fiber is surveyed at a certain temperature；Should flatten for sensor fibre under free state at this temperature
Average；ε ' is to carry out temperature-compensated fiber logarithmic strain at this temperature.
G1, G3 naked fibre is not obvious for the test of stress in Fig. 3 a, therefore the feelings of its reaction are not considered in data analysis
Condition.Being basically unchanged of data and curves before 5m, is that last time pressurization causes the reason for the 9th secondary data curve fluctuates
Concrete fracture, optical fiber is drastically stretched, and shows the state of stretching strain.Fig. 3 b first three time loading due to insufficient pressure, lead
Electroluminescence cable generates destruction so as to be in still in stretching strain state, the pressurization from the 4th time to the 9th time to concrete
Compressive strain state.There is first time compressive strain in optical cable at 1.5m in figure, and then second compressive strain at 3.4m, at 4.9m again
There is compressive strain.And can be seen that second and third time compressive strain be worth roughly equal, and be all higher than first time strain value,
It is essentially identical with actual conditions pressuring method herein, for targeted disruption detection is also more conform with reality in error allowed band
Border.During the 9th pressurization, it is positive situation that finally nearly strain value occurs suddenly in the distance of 2m, and reason is because last time adds
During pressure concrete is broken at 3# load apparatus so as to fracture and the situation of stretching strain occur.In sum, distributing optical fiber sensing
The optical cable capturing ability good for concrete damage has, can be used for the monitoring of Large Infrastructure Projects, and secondly valid certificates gather
The selection of urethane tight sleeve optic cable is feasible for the monitoring of concrete.
Claims (5)
1. a kind of concrete damage detects distributed test system, it is characterised in that：Including data collecting system, data processing with
Analysis system, monitoring and warning system, the data collecting system is by the internal monitoring straining and sensing for being embedded in inside concrete
Optical cable is constituted with the surface monitoring for being arranged on concrete surface with straining and sensing optical cable, wherein internal monitoring straining and sensing optical cable
For Metal Substrate strand straining and sensing optical cable, surface monitoring straining and sensing optical cable is Metal Substrate banding straining and sensing optical cable, described
Internal monitoring straining and sensing optical cable, surface monitoring straining and sensing optical cable by fiber demodulator and data processing and divides respectively
Analysis system connects, and data process＆analysis system is connected with monitoring and warning system.
2. a kind of concrete damage according to claim 1 detects distributed test system, it is characterised in that：Internal monitoring
Temperature-compensating optical cable is each configured with straining and sensing optical cable, surface monitoring straining and sensing optical cable, wherein internal monitoring is used and answered
Become the temperature-compensating optical cable of optical cable for sensing configuration into metal seamless tube sheath temperature optical cable for sensing, metal seamless tube sheath temperature sense
Light-metering cable with internal monitoring with inside straining and sensing optical cable Transducers Embedded in Concrete, the temperature that surface monitoring is configured with straining and sensing optical cable
Compensation optical cable is Metal Substrate banding temperature sensing optical cable, and Metal Substrate banding temperature sensing optical cable is with surface monitoring straining and sensing light
Cable is located at concrete surface, and metal seamless tube sheath temperature optical cable for sensing, Metal Substrate banding temperature sensing optical cable pass through respectively light
Fine demodulator is connected with data process＆analysis system.
3. a kind of concrete damage according to claim 1 detects distributed test system, it is characterised in that：Also include setting
The regular reinforcement component in inside concrete is put, internal monitoring straining and sensing optical cable is fixed on reinforcement component surface.
4. a kind of concrete damage according to claim 1 detects distributed test system, it is characterised in that：Internal monitoring
Form is laid in global mesh formula in inside concrete with straining and sensing optical cable, surface monitoring straining and sensing optical cable is in concrete
Linearly lay form in surface.
5. a kind of concrete damage based on system described in claim 1 detects distributed test method, it is characterised in that：First
Length, concrete measured object and external condition coverage according to straining and sensing optical cable, sets range, the sampling of monitoring instrument
Frequency, pulsewidth, spectral range；After straining and sensing optical cable installation, the collection of background data, including strain stress are carried out0And temperature
Value t0, As time goes on, measuring strain optical cable for sensing each point concrete deformation amount ε along the linei(i=1,2 ... ..., n), and
The data subtracting background value that later stage is monitored every time is used as certain concrete deformation value Δ ε=εi-ε0, due to straining and sensing optical cable
It is sensitive to axial strain and temperature dual, can not consider less than 5 DEG C in extraneous temperature change, but Large Infrastructure Projects are basic
It is in the environment with air directly contact, temperature change throughout the year is certain to have certain impact on the seizure of strain,
The accurate calculation that can be strained according to formula (1)：
In formula (1), υB(ε) be strain for ε when Brillouin's frequency drift value, υB(0) be strain for 0 when Brillouin's frequency
Drift value,For Proportion of strain value coefficient,For Temperature affection factor, T-T0For temperature variation, ε is optical fiber
Dependent variable；
The sensitivity characteristic caught to strain using straining and sensing optical cable, is become when straining and sensing optical cable and concrete couple completely coordination
During shape, its strain size for occurring is the deflection of concrete component,
Based on the linear relationship between Brillouin shift and sensor fibre strain, coagulation is embedded in by monitoring instrument real-time monitoring
The deformation of straining and sensing optical cable is passed in soil, sensor fibre circuit stress point is calculated to instrument incidence end by formula (2)
Apart from Z：
Z=cT/2n (2),
In formula (2)：C is the light velocity in vacuum, and T/2 is to send the Brillouin scattering that pulsed light is returned to reception optical fiber stress point
The half the time interval of light, n is the refraction coefficient of optical fiber；
The position for answering variable quantity and each point of straining and sensing optical cable each point along the line is can determine that according to above-mentioned formula (1), (2), works as coagulation
When native certain region point deforms, by the straining and sensing optical cable laid in component, you can scope residing for targeted disruption position,
Repaired in time.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917830A (en) * | 2018-06-19 | 2018-11-30 | 杭州市质量技术监督检测院 | A kind of intelligent wall with self-induction function |
| CN110186630A (en) * | 2019-05-10 | 2019-08-30 | 哈尔滨工业大学 | A kind of bridge state-detection and appraisal procedure based on distributed optical fiber sensing and girder overall length Strain Distribution |
| CN110849719A (en) * | 2019-09-29 | 2020-02-28 | 上海市隧道工程轨道交通设计研究院 | Monitoring method for compression and tensile deformation of stress rod piece based on optical fiber sensing technology |
| WO2020100509A1 (en) * | 2018-11-12 | 2020-05-22 | 日本電気株式会社 | Civil engineering structure monitoring system, civil engineering structure monitoring device, civil engineering structure monitoring method, and non-transitory computer-readable medium |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713638A (en) * | 2009-12-22 | 2010-05-26 | 浙江大学 | Calibration method and device of embedded-type long-distance optical fiber sensor |
| CN101713691A (en) * | 2009-12-22 | 2010-05-26 | 浙江大学 | Health-monitoring system of distributed sensing fiber tunnel |
-
2016
- 2016-12-05 CN CN201611103616.7A patent/CN106596904A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713638A (en) * | 2009-12-22 | 2010-05-26 | 浙江大学 | Calibration method and device of embedded-type long-distance optical fiber sensor |
| CN101713691A (en) * | 2009-12-22 | 2010-05-26 | 浙江大学 | Health-monitoring system of distributed sensing fiber tunnel |
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|---|---|---|---|---|
| CN108917830A (en) * | 2018-06-19 | 2018-11-30 | 杭州市质量技术监督检测院 | A kind of intelligent wall with self-induction function |
| WO2020100509A1 (en) * | 2018-11-12 | 2020-05-22 | 日本電気株式会社 | Civil engineering structure monitoring system, civil engineering structure monitoring device, civil engineering structure monitoring method, and non-transitory computer-readable medium |
| CN112997050A (en) * | 2018-11-12 | 2021-06-18 | 日本电气株式会社 | Civil engineering structure monitoring system, civil engineering structure monitoring device, civil engineering structure monitoring method, and non-transitory computer-readable medium |
| CN110186630A (en) * | 2019-05-10 | 2019-08-30 | 哈尔滨工业大学 | A kind of bridge state-detection and appraisal procedure based on distributed optical fiber sensing and girder overall length Strain Distribution |
| CN110186630B (en) * | 2019-05-10 | 2021-01-05 | 哈尔滨工业大学 | Bridge state detection and evaluation method based on distributed optical fiber monitoring and girder full-length strain distribution |
| CN110849719A (en) * | 2019-09-29 | 2020-02-28 | 上海市隧道工程轨道交通设计研究院 | Monitoring method for compression and tensile deformation of stress rod piece based on optical fiber sensing technology |
| CN110849719B (en) * | 2019-09-29 | 2022-04-05 | 上海市隧道工程轨道交通设计研究院 | Monitoring method for compression and tensile deformation of stress rod piece based on optical fiber sensing technology |
| CN111351771A (en) * | 2020-03-09 | 2020-06-30 | 苏交科集团股份有限公司 | Prefabricated pier sleeve connection grouting compactness monitoring system and method |
| CN111678454A (en) * | 2020-06-24 | 2020-09-18 | 安徽理工大学 | Distributed monitoring system and method for coal pillar stability |
| CN116625827A (en) * | 2023-06-17 | 2023-08-22 | 广州市盛通建设工程质量检测有限公司 | Method, device, equipment and medium for testing compression resistance of concrete containing steel slag fine aggregate |
| CN116625827B (en) * | 2023-06-17 | 2024-01-23 | 广州市盛通建设工程质量检测有限公司 | Method, device, equipment and medium for testing compression resistance of concrete containing steel slag fine aggregate |
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Application publication date: 20170426 |